Armature.



T. ABTMEYER.

ARMATURE.

APPLICATION FILED MAY 22, 1911.

1,153,474. PatentedSept. 14, 1915.

10 II I I .I I "I! Ii I 10 I [Inf iihltzl li llmu 10 WITNESSES:

} q an INVENTOR BY ZTTOR-NEY UNITED STATES PATENT OFFICE.

THEODORE AIBTMEYER, 0F WILKINSBUBG, PENNSYLVANIA, ASSIGNOR T0 WESTING- HOUSE ELECTRIC AND MANUFACTURING COMPANY, A CORPORATION OF PENN- SYLVANIA.

ARMATURE.

Application filed May 22, 1911.

To all whom it may concern:

Be it known that I, THEODORE ABTMEYER, a citizen of the United States, and a resident of Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Armatures, of which the following is a specification.

My invention relates to armatures of dynamo-electric machines, and particularly to armatures of small motors for incorporation in meters or for other service.

The object of my invention is to provide a small armature that shall be very simple in construction and convenient and economi cal to manufacture.

Figure 1 of the accompanying drawlng 1s a longitudinal sectional view, through an armature embodying my invention. F1g. 2 is an end View of the said armature. Fig. 3 is a side view of the arbor of the armature. Figs. 4 and 5 are end and side views, respectively of the radial core plates of the armature. Fig. 6 is a side view of the outer shell of the armature. Fig. 7 is a longitudinal sectional view of a part of a modified form of armature. Figs. 8 and 9 are end and side views, respectively, of a modified form of pole piece or core plate for the armature. Fig. 10 is a longitudinal sectional view of a modified form of the armature, and Fig. 11 is a similar view of a part of still another modified form of the armature.

The armature comprises a supporting shaft 1, upon which are mounted and suitably spaced apart two stepped washers 2 that support between them two concentric cylinders 3 and 4, the outericylinder 4, (Fig. 3) being provided with spaced longitudinal slots. Extending laterally and diverging from the cylinders 3 and 4, with their inner ends extending into the longitudinal slots in the outer arbor cylinder 4 and seated against the inner cylinder 3, are a plurality of substantially L-shaped plates or punchings 5 constituting supports for coils 6 that are wound upon flattened insulating bobbins 7 and the terminals of which are suitably connected tothe segments of a commutator cylinder 12. The plates 5 may be, and preferably are, composed of iron, in order that they may constitute pole pieces. but. if the armature is used in meters or other devices wherein it is desirable to avoid the effects of residual magnetism, the plates may be com posed of non-magnetizable material. The

Specification of Letters Patent.

Patented Sept. 14, 1915.

Serial No. 628,740.

outer ends of the plates are engaged and spaced apart by a cylinder 8 (Fig. 6) havmg longitudinal slots extending from one endto near the other end, the plates 5 proectmg through the slots and the relatively short transverse end. or leg portions 9 thereof lying closely against the outer face of the cylinder. The plates 5 are provided, near their outer ends, with punched lips 10, between which and the cylindrical portions 9 thereof the cylinder 8 is inserted, the cylinder thereby serving to retain the plates 5 in the slots in the member 4. A supporting member 11 may be secured in the slotted end of the cylinder, if desired, in order to make the structure somewhat more rigid. The cylinder 8 is preferably composed of nonmagnetizable material, which, when the armature is employed in meters, will serve the purpose, of a damping member in which eddy currents are produced by its rotation in a magnetic field.

It will be noted that each of the parts of the armature is of very simple construction and does not require the application of expensive machine work in its manufacture, and also that the said parts may easily be assembled. The coils may be wound in a lathe upon simple bobbins entirely apart from the core or pole plates and the core plates or pole pieces 5 may be readily formed by punching from sheet metal.

A modified form of the structure is shown in Fig. 7, in which the cylinder 3 is omitted but the radial plates or pole pieces are provided with short laterally extending lugs 15, that serve to prevent the said plates from extending too far through the slots in the cylinder 4. and which also provide supports upon which a band 16 may be applied for retaining the plates in position. With this construction, the lips 10 may be omitted from the plates or pole pieces 5 and the cylinder 8 then serves only as spacing and supporting means for the outer ends of the said plates.

If it is desired to increase the cross sectional area of the pole pieces, in order to provide larger paths for the magnetic fluxes, a plurality of radial plates may be placed face to face and secured together, by means of lips punched from one of the members and extending through the others and bent over upon that which is outermost, substantially as shown in Figs. 8 and 9.

Another modified form of the armature is shown in Fig. 10, in which the radial plates or pole pieces 18 are provided with dove-tail inner ends that project through the slots in the cylinder 4 and are engaged within the cylinder by two clamping bushings 19 having tapered or beveled end faces. The clamping bushings are forced into engagement with the dove-tail ends of the radial plates or pole pieces, so as to draw the same inwardly until their inner ends bear upon the shaft, by means of nuts 20 that are screwed into the inner ends of the cylinder 4. With this construction, the radial plates or pole pieces may be made of sufiiciently heavy material to be self-supporting at their outer ends, or a slotted cylinder substantially like that shown in Fig. 6 may be employed for supporting the outer ends thereof, as indicated.

In Fig. 11, is shown still another modification of the armature in which the slots in the inner cylinder 22 extend less than half-way across it alternately from opposite ends thereof, thus permitting of the employment of a larger number of the radial plates than would otherwise be possible. In this case, of course, the dove-tail portions 23 of the radial plates are only about half as wide as the plates themselves and are staggered in position. A middle clamping ring 24. having both of its end .faces inwardly tapered is also interposed between the dove-tail pro ections on adjacent plates. Otherwise, the construction is similar to that of Fig. 10.

I claim as my invention:

1. An armature for dynamo-electric machines comprising a shaft, a plurality of L- shaped plates diverging laterally therefrom and having laterally extending end portions forming substantially a cylindrical surface, a longitudinally slotted cylinder for engaging the outer end of the said plates, and coils upon the said plates.

2. An armature core for dynamo-electric machines comprising a shaft, a plurality of plates diverging laterally therefrom, and a longitudinally slotted cylinder for engaging the outer end of the said plates.

3. An armature for dynamo-electric machines comprising a shaft, a plurality of L- shape plates carried thereby and diverging laterally therefrom, coils mounted upon the said plates, and a cylinder engaging the outer ends of the plates.

4. An armature for dynamo-electric machines comprising a shaft, a plurality of magnetizable L-shape plates carried thereby and diverging laterally therefrom, and coils mounted upon the said plates.

5. An armature for dynamo-electric machines comprising a longitudinally slotted arbor, a plurality of L-shaped diverging plates seated in the slots in the arbor, and coils surrounding the plates.

6. An armature for dynamo-electric machines comprising a longitudinally slotted arbor, a plurality of diverging plates seated in the slots in the arbor, means for securing the plates in the slots, and coils surrounding the plates.

7. An armature for dynamo-electric machines comprising a longitudinally slotted arbor, a plurality of diverging plates seated in the slots in the arbor, coils surrounding the plates, and a cylinder engaging the outer ends of the plates.

8. An armature for dynamo-electric machines comprising a longitudinally slotted arbor, a plurality of diverging plates seated in the slots in the arbor, coils surrounding the plates, and a slotted cylinder through which the outer ends of the plates project.

9. An armature for dynamo-electric machines comprising a longitudinally slotted arbor, a plurality of diverging plates seated in the slots in the arbor and having laterally projecting portions at their outer ends, and a supporting cylinder to be engaged by the laterally projecting portions of the plates and having longitudinal slots through which the plates project.

10. An armature for dynamo-electric machines comprising a longitudinally slotted arbor, a plurality of diverging L-shape plates seated in the slots in the arbor, and a slotted outer cylinder through which the plates project and upon which the outer end portions lie.

11. An armature for dynamo-electric machines comprising a longitudinally slotted cylinder, a plurality of diverging plates having dove-tail ends extending through the slots in the cylinder, and clamping means within the cylinder for the dove-tail ends of the plates.

12. An armature for dynamo-electric machines comprising a longitudinally slotted cylinder, a plurality of diverging plates extending through the slots in the cylinder, and clamping means within the cylinder to engage the ends of the plates.

13. An armature for dynamo-electric machines comprising a longitudinally slotted cylinder, a plurality of diverging plates having dove-tail ends extending through the slots in the cylinder, clamping bushings within the cylinder to engage the dove-tail ends of the plates, and means for clamping the said bushings against the ends of the plates.

14. An armature for dynamo-electric machines comprising a longitudinally slotted cylinder, a plurality of diverging plates having dove-tail ends extending through the slots in the cylinder, clamping bushings Within the cylinder to engage the dove-tail ends of the plates, and a not for forcing the bushing against the ends of the plates.

15. An armature for dynamo-electric machines comprising a longitudinally slotted cylinder, a plurality of divergmg plates extending through the slots in the cylinder,

clamping bushings within the cylinder to engage the ends of theplates, and means for forcing the said bushings into engagement with the ends of the plates.

16. An armature for dynamo-electric machines comprising a longitudinally slotted cylinder, a plurality of diverging L-shape plates having dove-tail ends extending through the slots in the cylinder, clamping means within the cylinder to engage the ends of the plates, and a slotted cylinder engaging the outer ends of the plates.

17 An armature core for dynamo-electric machines comprising a cylinder having staggered longitudinal slots, and a plurality of diverging plates having end portions projecting through the said slots.

18. An armature core for dynamo-electric machines comprising a cylinder having staggered longitudinal slots, a plurality of diverging plates having end portions projecting through the said slots and end and intermediate clamping rings for the end portions of the plates.

19. An armature core for dynamo-electric machines comprising a cylinder having staggered longitudnal slots, a plurality of diverging plates having dove-tail end portions projecting through the said slots, and end and intermediate clamping rings for the end portions of the plates.

In testimony whereof, I have hereunto iglficribed my name this 17 day of May,

THEODORE ABTMEYER.

Witnesses:

J. B. BAcKornN, B. HINES. 

